My guest is Brian VanDemark. His newest book "Road to Disaster," draws upon decades of archival research, his own interviews with many of those involved, and a wealth of previously unheard recordings by Robert McNamara and Clark Clifford, who served as Defense Secretaries for Kennedy and Johnson. Yet beyond that, "Road to Disaster" is also the first history of the war to look at the cataclysmic decisions of those in the Kennedy and Johnson administrations through the prism of recent research in cognitive science, psychology, and organizational theory to explain why the "Best and the Brightest" became trapped in situations that suffocated creative thinking and willingness to dissent, why they found change so hard, and why they were so blind to their own errors.